The term "Free Teens" is a slang expression that refers to young people, typically in their late teenage years or early twenties, who are single and not involved in any romantic relationships. This can be due to various reasons such as personal choice, lack of interest, focus on other priorities like education or career, or simply being too busy with life's responsibilities. The phrase is often used humorously or lightheartedly to describe this stage of life and the freedom that comes with it.